Dampened locomotive bogie axle

ABSTRACT

A bogie locomotive with axles which are supported relative to the bogie frame by axle springs and which are linked to the bogie frame by linkage means while the damping of the axle spring system is effected by hydraulic damping means. Each axle side has associated therewith lateral motion abutments and hydraulic damping means which are connected to a first bearing means in the bogie and to a second bearing means in the axle bearing arrangement and which during lifting of the locomotive proportionately absorb the weight of the wheel set and the residual force of the relaxed springs.

United States Patent 1191 Hess [451 Oct. 15, 1974 [30] ForeignApplication Priority Data Apr. 28, 1971 Germany 2120874 [52] US. Cl.105/224 R, 105/171, 105/199 R, 105/218 A, 105/222 [51] Int. Cl. B6lf5/30, B6lf 5/38, B61f15/02 [58] Field of Search 105/136, 171, 182 R,192, 105/199 S, 218 A, 218 R, 224 R, 199 R, 222

3.651.766 3 1972 Lich 105 136 3,682,102 8/1972 Pockington ct al 105 199s x FOREIGN PATENTS OR APPLICATIONS 936,453 12 1955 Germany 105/218 A1.073.018 1/1960 Germany 105/218 A Primary Examiner-M. Henson Wood, .lr.Assistant Examiner-Howard Beltran Attorney, Agent, or Firm-Walter Becker[5 7 ABSTRACT A bogie locomotive with axles which are supported relativeto the bogie frame by axle springs and which are linked to the bogieframe by linkage means while the damping of the axle spring system iseffected by hydraulic damping means. Each axle side has associatedtherewith lateral motion abutments and hydraulic [56] References Citeddamping means which are connected to a first bearing UNITED STATESPATENTS means in the bogie and to a second bearing means in 1,485,2242/1924 Hamilton 105/218 A the axle bearing arrangement and which duringlifting 1,961,010 5/1934 Norbom 105/192 of the locomotiveproportionately absorb the weight 2,080,180 5/1937 Messier 105/171 ofthe wheel set and the residual force of the relaxed 2,168,293 8/1939Kiesel, Jr. 105/182 R springs. 3,439,630 4/1969 Cope 105/224 R X3.451355 6/1969 Dobson et al 1051136 1 Claim, 4 Drawing Figures 1L1 m1111 9 m ll PAIENIED um 1 5x914 Mhpu.

6 gym? E; 5 J J DAMPENED LOCOMOTIVE BOGIE AXLE The present inventionrelates to a bogie locomotive liftable by means of an auxiliary device,according to which spring controlled sets of wheels are suspended in thebogie, the axle springs of said wheel sets being damped by means ofhydraulic dampers or shock absorbers.

When carrying out assembly work or replacing the locomotive back onrails, it is necessary to lift the locomotive by means of a crane orsimilar apparatus. In this connection, the sets of wheels in the bogiemust also be lifted; in order that the wheel sets do not remain on therails when the locomotive is lifted, tie bars (Achsgabelstege) orspecial coupling side bars or similar constructions are provided.

Such constructions are expensive, and are included in with the price ofthe entire locomotive, although lifting of the locomotive occurs onlyrelatively seldom during the working life of the locomotive.

It is an object of the present invention to avoid the drawbacks of suchexpensive constructions, and to create the possibility of lifting thelocomotive together with the bogies having the wheel sets in a simplemanner, in the course of which, in addition to the weight of the wheelsets, the residual force of the expanded support springs is also to betaken into account.

This object and other objects and advantages of the invention willappear more clearly from the following specification in connection withthe accomapnying drawings, in which:

FIG. 1 schematically shows a three axle bogie of a six axle locomotivewith the hydraulic dampers according to the invention.

FIG. 2 shows a side view of a six axle locomotive with the dampers whichserve as lifting and holding means for the wheel sets according to theinvention, according to which the lifting is effected by means ofcradles on the bogie frame.

FIG. 3 is a cutout section of FIG. 2 showing the arrangement andattachment of a hydraulic damper associated with an axle springaccording to the invention.

FIG. 4 is a side view of the cutout shown in FIG. 3 according to theinvention.

The invention is characterized primarily in that the damping means forthe wheel set springs are so designed that the forces generated by theweight of the wheel sets during lifting of the locomotive, as well asthe residual forces of the expanded support springs, may be absorbed bythe damping means.

It has been found that the damping means, necessary for damping the axlesprings, can be dimensioned from the very start so that, withoutmaterial additional costs, they will be able to absorb the weight of thewheel sets plus the residual force of the expanded axle springs.

With six-axle locomotives having two three-axle bogies, with whichhydraulic damping of the axle springs need only be present in the endaxles of the bogies, two damping means per wheel side are mounted in themiddle axle. These damping means, if necessary, may be installed withoutoil and valves and simply serve as a lifting and holding device for thewheel sets. It has also been found in this connection that even with themiddle axle. which under certain circumstances requires no dampingmeans, the mounting of damping means, in addition to yielding a moreuniform appearance, af-

fords a less expensive possibility to be able to also lift the middleaxle without additional lifting or holding devices.

The lifting of the entire locomotive occurs in a known way in such amanner that particular holding points are mounted, for example, on thebridge beam, which holding points are engaged by the lifting device. Thelifting of the bogie with the locomotive occurs in this case through acoupling plate on the journal or through special connecting elementsbetween the chassis and the bogie.

The lifting of the entire locomotive may also be effected by the liftingdevice engaging particular areas of the bogie housing.

In both cases the lifting and holding device according to the inventionis effective with regard to the wheel sets.

Referring now to the drawings in detail, the arrangement shown thereincomprises a bogie frame 1, wheel sets 2, axle bearing 3, and axlesprings 4, which latter rest against the bogie frame 1. The arrangementshown in the drawings further comprises axle forks (Achslenker) 5.

The bridge beam 7 with the locomotive assembly rests upon the bogieframe 1 by means of the cradle springs (Wiegefedern) 6. The drivingmotors 8 are arranged in the bogie frame 1. The axle forks 5 are movablyhinged on brackets or cantilevers 9 on the bogie frame 1. The hydraulicdamping means 10 associated with every axle spring system arerespectively flexibly connected with their ends in the axle box in abearing 11 and on the bogie frame with a bearing 12. Each bearing 11carries an abutment 14 facing the bogie frame, which is opposed by anabutment 15 on the bogie frame, said pair of abutments being alinedtransversely of the bogie frame and closely spaced, so that movement ofthe axle relative to the bogie frame is limited when the wheels arelifted off the rails. The hydraulic damping means 10 do not differ fromheretofore known damping means as far as their outer appearance isconcerned. The cradles 13 on the bogie frame I serve for lifting of theentire locomotive.

It is, of course, to be understood that the present invention is by nomeans limited to the specific showing in the drawings but also comprisesany modifications within the scope of the appended claims.

What I claim is:

l. A locomotive with bogies including wheel sets, which comprises: abogie frame; axle springs, said axle springs forming an axle springsystem; axles supported relative to said bogie frame; hydraulic dampingmeans each fastened in a vertical plane substantially in alignment aboveand coinciding with the respective axle located intermediate a pair ofsaid axle springs parallel to each other on both sides of the respectiveaxle, said hydraulic damping means at least in part collectively dampingsaid axle spring system, first bearing means connecting each of saidhydraulic damping means to the respective bogie frame; axle bearingarrangements; second bearing means connecting each of said hydraulicdamping means to the respective axle bearing arrangement; transverselyalined, opposed, spaced abutments on each said second bearing means andon said bogie frame adjacent said axle bearing arrangement; saidhydraulic clamping means being of such a magnitude as to be able toserve during lifting of said locomotive to proportionately absorbentirely the weight of said wheel sets and the residual force of saidaxle springs when said wheels are lifted, while said opposed abutmentslimit movement of said axle transversely of said bogie frame.

1. A locomotive with bogies including wheel sets, which comprises: abogie frame; axle springs, said axle springs forming an axle springsystem; axles supported relative to said bogie frame; hydraulic dampingmeans each fastened in a vertical plane substantially in alignment aboveand coinciding with the respective axle located intermediate a pair ofsaid axle springs parallel to each other on both sides of the respectiveaxle, said hydraulic damping means at least in part collectively dampingsaid axle spring system, first bearing means connecting each of saidhydraulic damping means to the respective bogie frame; axle bearingarrangements; second bearing means connecting each of said hydraulicdamping means to the respective axle bearing arrangement; transverselyalined, opposed, spaced abutments on each said second bearing means andon said bogie frame adjacent said axle bearing arrangement; saidhydraulic damping means being of such a magnitude as to be able to serveduring lifting of said locomotive to proportionately absorb entirely theweight of said wHeel sets and the residual force of said axle springswhen said wheels are lifted, while said opposed abutments limit movementof said axle transversely of said bogie frame.